diff --git a/.github/workflows/test_pull_request.yml b/.github/workflows/test_pull_request.yml
index 24a243c39f..155e1c890b 100644
--- a/.github/workflows/test_pull_request.yml
+++ b/.github/workflows/test_pull_request.yml
@@ -13,7 +13,6 @@ jobs:
         go:
           - "1.17"
           - "1.16"
-          - "1.15"
 
     steps:
       - name: Set up Go ${{ matrix.go }}
diff --git a/go.mod b/go.mod
index b4659b1eec..b7f3cd1bec 100644
--- a/go.mod
+++ b/go.mod
@@ -11,4 +11,4 @@ require (
 	github.com/xeipuuv/gojsonschema v0.0.0-20181112162635-ac52e6811b56
 )
 
-go 1.15
+go 1.16